Plant disease: powdery mildew

Powdery mildew is a fungus that commonly dots leaves with white splotches.

Powdery mildew can show up late in the summer growing season, often after the nights turn cooler and wetter. While it's not attractive, powdery mildew is unlikely to reduce harvests late in the season.

Handling powdery mildew in the fall

Cut off affected leaves to maintain the plants' beauty.

Place diseased foliage in your yard-waste bin to avoid infecting other garden plants.

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